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首页> 外文期刊>Journal of Russian laser research >NONLINEAR DIFFRACTION AND TOTAL INTERNAL REFLECTION IN OPTICAL-BEAM INTERACTION IN DEFOCUSING MEDIA
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NONLINEAR DIFFRACTION AND TOTAL INTERNAL REFLECTION IN OPTICAL-BEAM INTERACTION IN DEFOCUSING MEDIA

机译:聚焦介质中光-束相互作用的非线性衍射和总内部反射

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摘要

We elaborate the theory of reflection of an optical signal beam from an inhomogeneous channel created by a high-power laser beam of different frequency in a nonlinear defocusing medium. We study the effects of total internal reflection and nonlinear diffraction in the interaction of these beams. We derive and analyze the equation for the trajectory of the reflected signal beam and obtain the expression for the critical value of beam-intersection angle below which the total internal reflection occurs. We discuss the results of numerical modeling of nonlinear Schrodinger equations for envelopes of the beams in media with quadratic, photorefractive, and thermal nonlinearities. We present experimental data on the interaction of beams of argon and helium-neon lasers in a cuvette with tinted alcohol.
机译:我们阐述了在非线性散焦介质中光信号束从不均匀通道反射的理论,该通道是由不同频率的高功率激光束产生的。我们研究了全内反射和非线性衍射在这些光束相互作用中的作用。我们推导并分析了反射信号光束的轨迹方程,并获得了在发生全内反射时光束相交角临界值的表达式。我们讨论具有二次,光折变和热非线性的介质中光束包络线的非线性Schrodinger方程的数值建模结果。我们目前的实验数据是在有色酒精的比色皿中氩气和氦氖激光束之间的相互作用。

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